My last revolver, the Revosemi surprised me in that it actually worked but now I want something that makes a seal between the cartridge and barrel. My other problem was the inconsistency of the homemade revolving cam. It wasn't quite accurate enough to fire confidently. So here's my next design.

I don't know if this has been brought up before but I was doodling around with my pen at school when I noticed that the back of the pen revolves when you push down on it. Look at the mechanism to figure it out.

Just so you know, the rotating wheel is not fixed horizontally to the tube it revolves on. It slides back and forth but still rotates with the tube.

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When you push a pen, the writing part comes out of the end so you can write. This is due to the fact that its rotating piece is staggered. Would this effect your design any? If not, I see no reason this would not work.

ya it sort of does. What I was thinking was have a tension spring in front of the trigger so it always pulls the trigger all the way back. I might also spring load the rotating wheel so it is always in a forward position.

I guess a pen would be a little small to deliver the torque you need. But, with a good set of files and a little patience and skill, you could make the same mechanism of PVC fittings (couplers, for example). Then you could use a pipe as the central axle.

I think I wanted to use the handle from a bicycle handbrake to pull a wire to drive the thing. I never build it...

I thought about building the rotating mechanism but I really want accuracy and due to my lack of the right tools (I'm getting bored of filing everything), accuracy is something I don't have. The rotating wheel is only going to be like an inch and a half so it won't be too heavy and I hope torque isn't a factor.

A bigger one would be pretty cool though. A well designed revolver with big cartridges looks, well, full of testosterone or something like that.